package com.njg.juc.interactive;


import java.util.concurrent.TimeUnit;
import java.util.concurrent.locks.Condition;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;

class ShareData {
    private int flag = 1;
    private Lock lock = new ReentrantLock();
    private Condition condition1 = lock.newCondition();
    private Condition condition2 = lock.newCondition();
    private Condition condition3 = lock.newCondition();


    public void println5() throws InterruptedException {
        lock.lock();
        try {
            //1.判断
            while (flag != 1) {
                condition1.await();
            }
            //2.干活
            for (int i = 1; i <= 5; i++) {
                System.out.println(Thread.currentThread().getName() + "\t" + i);
            }
            //3.通知
            flag = 2;
            condition2.signal();
        } finally {
            lock.unlock();
        }
    }
    public void println10() throws InterruptedException {
        lock.lock();
        try {
            //1.判断
            while (flag != 2) {
                condition2.await();
            }
            //2.干活
            for (int i = 1; i <= 10; i++) {
                System.out.println(Thread.currentThread().getName() + "\t" + i);
            }
            //3.通知
            flag = 3;
            condition3.signal();
        } finally {
            lock.unlock();
        }
    }
    public void println15() throws InterruptedException {
        lock.lock();
        try {
            //1.判断
            while (flag != 3) {
                condition3.await();
            }
            //2.干活
            for (int i = 1; i <= 15; i++) {
                System.out.println(Thread.currentThread().getName() + "\t" + i);
            }
            //3.通知
            flag = 1;
            condition1.signal();
        } finally {
            lock.unlock();
        }
    }
}

/**
 * @auther zzyybs@126.com
 * @Date 2025-04-23 8:27
 * @Description: TODO
 * <p>
 * 多线程之间按顺序调用，实现A->B->C
 * 三个线程启动，要求如下：
 * *  *
 * AA打印5次，BB打印10次，CC打印15次
 * 接着
 * AA打印5次，BB打印10次，CC打印15次
 * ......来10轮
 * *
 * <p>
 * 笔记：Java里面如何进行工程级别的多线程编写
 * * 1 多线程变成模板（套路）
 * *  高内聚低耦合前提下，线程    操作    资源类
 * *  *
 * 2 判断   干活   通知
 * *  *
 * 3 多线程通信中，如果存在wait方法的调用要避免，------虚假唤醒
 */
public class ThreadOrderAccess {
    public static void main(String[] args) {
        ShareData shareData = new ShareData();

        new Thread(() -> {
            try {
                for (int i = 0; i < 10; i++) {
                    try {
                        TimeUnit.MILLISECONDS.sleep(100);
                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }
                    //业务逻辑
                    shareData.println5();
                }
            } catch (InterruptedException e) {
                throw new RuntimeException(e);
            }
        }, "A").start();


        new Thread(() -> {
            try {
                for (int i = 0; i < 10; i++) {
                    try {
                        TimeUnit.MILLISECONDS.sleep(100);
                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }
                    //业务逻辑
                    shareData.println10();
                }
            } catch (InterruptedException e) {
                throw new RuntimeException(e);
            }
        }, "B").start();

        new Thread(() -> {
            try {
                for (int i = 0; i < 10; i++) {
                    try {
                        TimeUnit.MILLISECONDS.sleep(100);
                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }
                    //业务逻辑
                    shareData.println15();
                }
            } catch (InterruptedException e) {
                throw new RuntimeException(e);
            }
        }, "C").start();
    }

}
